Respiration Flashcards
Fill in the gaps, respiration occurs in every _______ cell. In eukaryotic cells it occurs in the ______
living, mitochondria
what are the two types of respiration
Aerobic and anaerobic
What is respiration
A chemical process that takes energy from glucose by breaking it down to release ATP
why is energy important? (Mention for humans, plants and other organisms)
for humans ,to keep warm and muscle contraction.
for plants, active transport and the movement of food substances.
for other organisms, movement.
What is the word equation for aerobic respiration
oxygen + glucose —> carbon dioxide + water (+ energy)
What is the symbol equation for aerobic respiration
6O2+C6H12O6—> 6CO2+6H2O (+ energy)
Where did the substrates for aerobic respiration come from?
glucose comes from a digestion of food
oxygen comes from gas exchange in the lungs transported through the blood
Why did the products of aerobic respiration go?
carbon dioxide is released through our lungs through gas exchange
water is used or excreted in sweat urine or breath
energy is used within the same cell
what does hydrogen carbonate indicator solution turn in a neutral pH ,acidic pH and alkaline pH.
red in a neutral pH
yellow and acidic pH
purple in an alkaline pH
What is CO2, neutral, acidic or alkaline?
Acidic
What is anaerobic respiration
Respiration without the presence of oxygen
Why do we anaerobically respire and what are the advantages?
we anaerobically respire when muscles are not receiving enough oxygen, this is an advantage as it allows muscles to work for longer without oxygen.
What are the downsides to anaerobic respiration? (Name three)
anaerobic respiration does not release as much energy as aerobic respiration
anaerobic respiration builds up a lactic acid in muscles which causes pain and muscle fatigue
when muscles respire anaerobically they build up an oxygen debt so when you stop exercising your body needs to repay the debt to all the muscles needed

What is the word equation for anaerobic respiration
glucose —->lactic acid (+ energy)
what is the word equation for anaerobic respiration in plants and fungi?
glucose—-> carbon dioxide+ ethanol (+ Energy)
What can we use the products of anaerobic respiration in plants and fungi for?
carbon dioxide is used in breadmaking as the pockets of carbon dioxide get trapped and causes of bread to rise
ethanol is using beer and wine making use releases alcohol which eventually kills the yeast
